Caribou, ME – Northern Maine is set for a cool and unsettled weekend, with light rain expected Sunday, followed by a significant temperature drop early next week that could bring the first widespread frost of the season.
The Weather Setup: Calm Saturday Before Rain Arrives
Saturday began calm and cool across Caribou and much of Aroostook County, with gray skies and early morning frost glinting across open fields. According to the National Weather Service in Caribou, daytime highs will reach around 51°F under increasing cloud cover.
Forecasters expect a weak weather disturbance to move through the region late Sunday, bringing light but steady rainfall from Presque Isle to Limestone. The system will mark the area’s first extended stretch of wet weather in nearly a week, signaling the arrival of a colder, more active pattern.
Forecast and Rain Outlook for Sunday and Monday
Meteorologists say Sunday afternoon into Monday will feature occasional light showers, with precipitation totals expected to remain under 0.25 inches.
“We’re looking at a few periods of light rain Sunday afternoon through early Monday, but nothing heavy,” forecasters said. “The bigger story is the colder air that follows.”
By Monday, another weak system will brush northern Maine, maintaining a 40% chance of showers before colder, drier air sweeps in from the northwest by late afternoon.
Drivers are advised to use caution on Route 1 and rural backroads, as wet pavement could create slippery conditions during early commutes both Sunday and Monday morning.
Early Frost and Cold Snap Developing by Tuesday
Once the skies clear late Monday night, temperatures are expected to plunge into the upper 20s, bringing the first widespread frost — and possibly patchy freezing conditions — by early Tuesday morning.
Gardeners are urged to bring in potted plants and protect sensitive vegetation, while homeowners should disconnect garden hoses and drain outdoor faucets to prevent damage.
“We could see our first true cold stretch of the season,” meteorologists warned. “By Tuesday morning, frost and freeze conditions will be widespread across Aroostook County.”
Daytime highs on Tuesday will hover near 51°F, but clear skies overnight will allow more radiational cooling, setting up continued frost potential through midweek.
Midweek Outlook: Sunshine Returns, But Chill Lingers
By Tuesday and Wednesday, skies will turn mostly sunny again, yet the air will stay crisp and dry. Daytime highs will remain close to 50°F, with nighttime lows near freezing. Light northwesterly winds will make mornings feel even colder, reminding residents that winter’s edge is drawing closer.
Forecasters expect the cold pattern to persist into next weekend, with another potential frost or light freeze before temperatures moderate slightly.
Five-Day Forecast for Caribou, ME
- Saturday: 51°F / 35°F – Increasing clouds; calm, cool evening.
- Sunday: 48°F / 36°F – Cloudy; light showers possible.
- Monday: 50°F / 32°F – Scattered showers early; colder air late.
- Tuesday: 51°F / 28°F – Mostly sunny; widespread frost early.
- Wednesday: 50°F / 30°F – Partly sunny; chilly, dry midweek.
Conclusion
The next few days will bring a classic late-fall transition for northern Maine — from mild and damp to clear and frosty. Residents should prepare for cold mornings, slick roads, and the first true taste of winter settling into Caribou and surrounding areas.
How are you preparing for Maine’s first frost of the season? Share your thoughts and local updates in the comments below.
